Insecticidal properties of benzofuran-2-carboxylic acid derivatives

✍ Scribed by Jackson, Yvette A.; Williams, Mark F.; Williams, Lawrence A. D.; Morgan, Kisha; Redway, Flona A.

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 173 KB
• Volume: 53
• Category: Article
• ISSN: 1526-498X
• DOI: 10.1002/(sici)1096-9063(199807)53:3<241::aid-ps763>3.0.co;2-f

✦ Synopsis

A series of amides and esters of substituted benzo[b]furan-2-carboxylic acids have been synthesised, and their activity against adult sweet potato weevils, Cylas formicarius elegantulus (Summer) studied. The topical insecticidal potency of these compounds was compared in acetone solution and in a mixture of piperonyl butoxide (PB) and acetone (0É05 ] 99É95 by volume). The compounds were much more active when administered in the acetone/PB mixture, and exhibited 48-h values ranging from 1É7 to 26É6 lg per insect. The most LD 50 active compound, 2-(3,5-dimethylpyrazol-1-ylcarbonyl)-6-methoxy-3-methylbenzofuran, was equiactive with technical grade dimethoate (in acetone/PB) on a weight basis.

1998 SCI (